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The effect of the reduction of single-wall carbon nanotubes (SWNTs) samples on the hydrogen adsorption is reported. Hydrogen adsorption isotherms have been performed at 77K and until 300Torr of hydrogen pressure on raw and modified SWNTs material produced by arc-discharge using Ni/Y as catalyst at different atomic percentages. The hydrogen adsorption isotherms of the samples after hydrogen reduction...
Hydrogen adsorption data on as-grown and heat-treated single walled carbon nanotubes (SWNTs) obtained by a volumetric procedure using a Quantachrome Autosorb-1 equipment are presented. The amounts of hydrogen adsorbed at atmospheric pressure reach approximately 0.01 wt.% at 298 K and 1 wt.% at 77 K. The isosteric heat of adsorption has been calculated for both samples from H 2 equilibrium...
The effect of oxidation on modification of single wall carbon nanotubes (SWCNTs) through successive purification steps has been studied. The efficient elimination of metal impurities has been followed by induced coupled plasma spectroscopy. Upon acid treatment, Raman spectroscopy clearly proofed that HNO 3 molecules were intercalated into the bundles of SWCNTs. At the same time, SWCNTs also...
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